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| Titel |
On the multi-fractal characteristics of the ULF geomagnetic field before the 1993 Guam earthquake |
| VerfasserIn |
F. Masci |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 1 ; Nr. 13, no. 1 (2013-01-29), S.187-191 |
| Datensatznummer |
250017542
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| Publikation (Nr.) |
 copernicus.org/nhess-13-187-2013.pdf |
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| Zusammenfassung |
| Ida et al. (2005) document significant changes in the multi-fractal
parameters of the ULF geomagnetic field H component starting about one month
before the 1993 Guam earthquake. According to the authors, these
multi-fractal signatures can be considered as precursory signals of the Guam
earthquake. As a consequence, they conclude that the multi-fractal analysis
may have an important role in the development of short-term earthquake
prediction capabilities. Since this and other similar reports have motivated
the idea that earthquake prediction based on electromagnetic precursory
signals may one day become a routine technique, the presumed precursors need
to be validated through independent datasets. In this review the seismogenic
origin of the multi-fractal magnetic signatures documented by Ida et al. (2005)
before the 8 August 1993 Guam earthquake is seriously put into
question. By means of the geomagnetic ΣKp index, it is demonstrated
that these multi-fractal parameter changes are normal signals induced by
the variation of the global geomagnetic activity level. |
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